Question 1

Correlation

Question

Which of the following statements are true about Bessels Correction while calculating a sample standard deviation? Bessels correction is always done when we perform any operation on a sample data. Bessels correction is used when we are trying to estimate ...

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Statistics 55 years 0 Answers 883 views Contributor

Question 2

Standard Deviation

Question

[True or False] Standard deviation can be negative.

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Statistics 55 years 3 Answers 976 views Contributor

Question 3

Case Study

Question

Studies show that listening to music while studying can improve your memory. To demonstrate this, a researcher obtains a sample of 36 college students and gives them a standard memory test while they listen to some background music. Under normal ...

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Case Study 55 years 0 Answers 1752 views Contributor

Question 4

Type 1 error

Question

What would be the Type I error? A) Concluding that listening to music while studying improves memory, and it’s right. B) Concluding that listening to music while studying improves memory when it actually doesn’t. C) Concluding that listening to music while studying does not ...

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Statistics 55 years 1 Answer 1375 views Contributor

Question 5

What is the difference between NumPy and SciPy?

Question

Try to be specific

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Python 55 years 1 Answer 932 views Great Grand Master

Question 6

Aptitude

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How would you weigh a plane without a scale?

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Interview Question 55 years 0 Answers 945 views Contributor

Question 7

PEP

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What is PEP 8 and why is it important?

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Python 55 years 2 Answers 931 views Contributor

Question 8

Python Memory Manager

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How is memory managed in Python?

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Python 55 years 0 Answers 867 views Contributor

Question 9

What is Scope Resolution in Python?

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Explain with examples

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Python 55 years 2 Answers 1529 views Contributor

Question 10

Dictionary and List

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What are Dict and List comprehensions?

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Python 55 years 1 Answer 1015 views Contributor

Question 11

Data Types in Python

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What are the common built-in data types in Python?

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Python 55 years 1 Answer 990 views Contributor

Question 12

What is pass in Python?

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Why is it used?

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Python 55 years 3 Answers 1083 views Contributor

Question 13

What is the difference between xrange and range in Python?

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Explain with code please

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Python 55 years 22 Answers 2051 views Contributor

Question 14

Global, protected, and private attributes

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What are global, protected and private attributes in Python?

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Python 55 years 3 Answers 1711 views Contributor

Question 15

VALUE AND REFERENCE

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How are arguments passed by value or by reference in python?

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Python 55 years 4 Answers 1238 views Contributor

Question 16

Iterators in Python?

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What are iterators in Python?

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Python 55 years 1 Answer 1029 views Contributor

Question 17

How can you make a Python Script executable on Unix?

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Please explain

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Python 55 years 0 Answers 867 views Contributor

Question 18

split() and join() function in Python

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Explain split() and join() functions in Python?

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Python 55 years 9 Answers 2488 views Contributor

Question 19

.py and .pyc

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What is the difference between .py and .pyc files?

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Python 55 years 1 Answer 894 views Contributor

Question 20

What is init?

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Explain with examples

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Python 55 years 2 Answers 1512 views Contributor

Question 21

What are modules and packages in Python?

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Explain its advantages

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Python 55 years 1 Answer 1006 views Contributor

Question 22

What are decorators in Python?

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Explain with examples

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Python 55 years 1 Answer 996 views Contributor

Question 23

What are lists and tuples?

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What is the key difference between the two?

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Python 55 years 1 Answer 838 views Contributor

Question 24

How do you copy an object in Python?

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Explain its types

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Python 55 years 2 Answers 1270 views Contributor

Question 25

What is the primary goal of A/B Testing?

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What does it mean?

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Statistics 55 years 1 Answer 1036 views Great Grand Master

Question 26

Where do you see yourself in 10 years? Best optimistic and intellectual answer?

Question

The most asked interview question of all time. It helps the interviewer understand the goals and objectives of the candidate, before coming to the part about what he/she will do to achieve it.

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Interview Question 55 years 0 Answers 992 views Newbie

Question 27

Case Study | Reduce costs and improve performance

Question

Your client is a telephone company trying to reduce the costs and improve performance in the repair service operation. How do you approach the problem? How would you go about implementing your solution?

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Case Study 55 years 0 Answers 699 views Great Grand Master

Question 28

Why do we need to make the dataset stationary in time series analysis ?

Question

I have always heard that data needs to be stationary, but why ?

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Machine Learning 55 years 0 Answers 872 views Contributor

Question 29

How to read PACF graph for time series ? Hike Interview question

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If possible please explain using graph.

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Machine Learning 55 years 0 Answers 939 views Contributor

Question 30

What is a chi-squared test?

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Tests in Statistics

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Machine Learning 55 years 1 Answer 851 views Contributor

Question 31

What is the confusion matrix? Explain it for a 2-class problem

Question

Please explain in layman terms

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Machine Learning 55 years 0 Answers 872 views Contributor

Question 32

What do you understand by information gain?

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Please explain with example

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Machine Learning 55 years 0 Answers 829 views Contributor

Question 33

How can you speed up the model’s classification/prediction time?

Question

Please explain

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Machine Learning 55 years 0 Answers 849 views Contributor

Question 34

You came to know that your model is suffering from low bias and high variance.

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Which algorithm should you use to tackle it? Why?

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Machine Learning 55 years 0 Answers 800 views Great Grand Master

Question 35

How to train a Logistic Regression model?

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In python

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Machine Learning 55 years 2 Answers 830 views Contributor

Question 36

What is Collation?

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What is Collation?

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SQL 55 years 1 Answer 1112 views Contributor

Question 37

What is a Data Definition Language?

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With examples

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SQL 55 years 1 Answer 972 views Contributor

Question 38

Please explain normalization in layman’s term

Question

What is Normalization in a Database?

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SQL 55 years 3 Answers 1041 views Contributor

Question 39

Different types of indexes in SQL

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Which are the different types of indexes in SQL?

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SQL 55 years 1 Answer 957 views Contributor

Question 40

Can we sort column using column alias in SQL?

Poll

Is it possible to sort a column using a column alias?

in progress 0

SQL 55 years 1 Answer 1306 views Contributor

Question 41

Clustered and non-clustered index in SQL

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What is the difference between clustered and non-clustered index in SQL?

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SQL 55 years 1 Answer 895 views Contributor

Question 42

What is the trade off between bias and variance?

Question

What’s the trade-off between bias and variance?

in progress 1

Machine Learning 55 years 3 Answers 1504 views Contributor

Question 43

Supervised and unsupervised difference

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What is the difference between supervised and unsupervised machine learning?

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Machine Learning 55 years 6 Answers 1343 views Contributor

Question 44

Difference between KNN and K-means

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How is KNN different from k-means clustering

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Machine Learning 55 years 1 Answer 1471 views Contributor

Question 45

What is the full form of ROC and how is it used ?

Question

Explain how a ROC curve works.

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Machine Learning 55 years 0 Answers 724 views Contributor

Question 46

What is the difference between precision and recall?

Question

Define precision and recall.

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Machine Learning 55 years 2 Answers 1020 views Contributor

Question 47

Please explain Bayes’ Theorem in simple terms

Question

What is Bayes’ Theorem? How is it useful in a machine learning context?

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Machine Learning 55 years 1 Answer 921 views Contributor

Question 48

Explanation

Question

what is markpov network?

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Machine Learning 55 years 0 Answers 873 views Contributor

Question 49

Why is “Naive Bayes” naive?

Question

Machine learning

in progress 0

Machine Learning 55 years 1 Answer 1162 views Contributor

Question 50

Explain your favourite ML algorithm in less than a minute

Question

What’s your favorite algorithm, and can you explain it to me in less than a minute?

in progress 0

Machine Learning 55 years 4 Answers 2545 views Contributor

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